Photoluminescence of praseodymium-doped Srn+1+TinO3n+1 (n=1, 2, ∞)
Photoluminescence of praseodymium-doped Srn+1+TinO3n+1 (n=1, 2, ∞)
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DOI：
10.1143/jjap.44.761
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发表时间：
2005-01-01
期刊：
影响因子：
--
通讯作者：
Katsumata, T
中科院分区：
文献类型：
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作者：
Inaguma, Y;Nagasawa, D;Katsumata, T
采用Pechini型可聚合配合物法和柠檬酸金属配合物法制备了钙钛矿型化合物Srn+1 TinO 3 n +1：Pr 3+（n = 1，2，无穷大），并研究了其光致发光性能。这些化合物的光致发光光谱在约490 nm和/或610 nm处显示出明显的峰，其分别对应于Pr 3+从激发态P-3（0）到基态H-3（4）、D-1（2）到H-3（4）的4f内跃迁。激发过程与主体材料中价带和导带之间的跃迁一致。对于具有n = 2的化合物（Sr 3 Ti 2 O 7：Pr 3+）观察到最强的红色发射，其次是化合物，n = I并且它=无穷大。这些化合物的发光性质的差异源于从主体到激活剂Pr 3+的能量转移的结构依赖性和Pr 3+的位置对称性。
Perovskite-related compounds, Srn+1TinO3n+1: Pr3+ (n = 1, 2, infinity), were prepared by a Pechini-type polymerizable complex, method using a citric metal complex and their photoluminescence properties were investigated. The photoluminescence spectra of these compounds show distinct peaks at approximately 490 nm and/or 610 nm, which correspond to the intra-4f transitions from the excited state P-3(0) to the ground state H-3(4), D-1(2) to H-3(4) of Pr3+, respectively. The excitation process is consistent with the transition between the valence band and the conduction band in host materials. The most intense red emission was observed for the compound with n = 2 (Sr3Ti2O7: Pr3+), following by the compounds, n = I and it = infinity. The differences in luminescent properties among the compounds originate from the structural dependence of the energy transfer from the host to the activator Pr3+, and the site symmetry of Pr3+.